I appreciate that it's different. Makes it fun in a way that the AAF, for example, was lacking. But yeah, two and outs are rough.

The AAF lacked any innovation. Besides eliminating the kickoff, not allowing more than five rushers and using 2001 XFL camera angles.
I liked their onside conversion idea, but I am probably in the minority.

Apparently the Broncos liked it enough to propose it to the competition committee.

We talked about the CFL's 20 second play clock in other threads. I paid attention to that for a bit while watching games last week. I noticed there was around 30-45 seconds available between plays. The XFL, with it's 25 second play clock, will easily be the fastest flowing football around (assuming the play starts once the previous play is over).

I have always thought about this for football and basketball. Whether or not, the length and the width of the field will ever be changed. The CFL has a longer field and 20 yard end zones. I wouldn’t mess with the length of an American football field but the width would be interesting. With athletes getting better over the years. Creating more space to operate would be interesting.